I'm not validating my principles.
You do sound silly.
You have the principle that to call a trans woman a woman would be a lie, yes?
Instead of just thinking this, you've stated that you'd refuse to refer to someone their preferred pronouns - based on this principle.
So in a way, you are kind of validating it. You're not just thinking it or discussing it with like minded people. You said you wouldn't change this based on a person's anxiety. (Pretty shitty, IMO.)
My question to you was if you would be prepared to change this principle based on the severity of the persons issues. I'd like an answer. It would be very telling.
Cis is not just a descriptor - it is limiting!! It means that people cannot veer out of 'normal' gender identity without thinking they should be trans!
What? 
Cis just means you identify as man and have a penis, or identify as a woman and have a vagina.
Why would that make anyone feel compelled to be trans? It's not really based on your whims anyway, is it.
You blithely insult posters further with your TERF comments and, when posters point out the insult, you will still insist that your little voice knows best.
All the while repeating that telling people they are something they don't want to be called is literally harmful!
When I said "something told me" I meant it as a joke. Perhaps it was a bad one, but the irony was that I've interacted with about three people with "terf" in their username.
As for the rest of it, I don't really understand. Are you saying I'm hypocritical because I'm saying that misgendering someone can be harmful and that "cis" isn't offensive?